<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      /*
        所有对象都是有原型链的，原型链的终点是null
      */

      // Object.prototype = {
      //   __proto__: null,
      // };
      // Date.prototype = {
      //   __proto__: Object.prototype,
      // };
      // date = {
      //   __proto__: Date.prototype,
      // };
      const date = new Date();
    </script>
  </body>
</html>
